4 Sources
Kubby, Steve, and Ed Rosenthal. Why Marijuana Should Be Legal. New York: Thunder Mouth Press, 2003. Print.
Gerdes, Louise. Marijuana. San Diego, CA: Greenhaven Press, 2002. Print.
Piper, Bill. "Should the U.S Decriminalize Marijuana." Washington Times. (2009): n. page. Print. <www.washingtontimes.com>.
White, Deborah. "Pros & Cons of legalizing Marijuana." About.com. (2009): n. page. Web. <www.usliberals.about.com>.